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<div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="limits.html#Limits_of_library_types"><span class="tocnumber">1</span> <span class="toctext">Limits of library types</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="limits.html#Example"><span class="tocnumber">2</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="limits.html#Limits_of_integer_types"><span class="tocnumber">3</span> <span class="toctext">Limits of integer types</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="limits.html#Example_2"><span class="tocnumber">4</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="limits.html#Limits_of_floating_point_types"><span class="tocnumber">5</span> <span class="toctext">Limits of floating point types</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="limits.html#Example_3"><span class="tocnumber">6</span> <span class="toctext">Example</span></a></li>
</ul>
</td></tr></table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Limits of library types">edit</a>]</span> <span class="mw-headline" id="Limits_of_library_types">Limits of library types</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code>&lt;stdint.h&gt;</code> </div>
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>PTRDIFF_MIN</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   minimum value of object of <span class="t-lc"><a href="ptrdiff_t.html" title="c/types/ptrdiff t">ptrdiff_t</a></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>PTRDIFF_MAX</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   maximum value of object of <span class="t-lc"><a href="ptrdiff_t.html" title="c/types/ptrdiff t">ptrdiff_t</a></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>SIZE_MAX</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   maximum value of object of <span class="t-lc"><a href="size_t.html" title="c/types/size t">size_t</a></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>SIG_ATOMIC_MIN</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   minimum value of object of <span class="t-lc"><a href="../program/sig_atomic_t.html" title="c/program/sig atomic t">sig_atomic_t</a></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>SIG_ATOMIC_MAX</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   maximum value of object of <span class="t-lc"><a href="../program/sig_atomic_t.html" title="c/program/sig atomic t">sig_atomic_t</a></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code>&lt;wchar.h&gt;</code> </div>
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>WCHAR_MIN</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   minimum value of object of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">wchar_t</span></span></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>WCHAR_MAX</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   maximum value of object of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">wchar_t</span></span></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>WINT_MIN</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   minimum value of object of <span class="t-c"><span class="mw-geshi c source-c">wint_t</span></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>WINT_MAX</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   maximum value of object of <span class="t-c"><span class="mw-geshi c source-c">wint_t</span></span> type  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>

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<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span>
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<div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;stdint.h&gt;</span>
<span class="co2">#include &lt;wchar.h&gt;</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"PTRDIFF_MIN    = %td<span class="es1">\n</span>"</span>, PTRDIFF_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"PTRDIFF_MAX    = %+td<span class="es1">\n</span>"</span>, PTRDIFF_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"SIZE_MAX       = %zu<span class="es1">\n</span>"</span>, SIZE_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"SIG_ATOMIC_MIN = %+jd<span class="es1">\n</span>"</span>,<span class="br0">(</span><a href="integer.html"><span class="kw118">intmax_t</span></a><span class="br0">)</span>SIG_ATOMIC_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"SIG_ATOMIC_MAX = %+jd<span class="es1">\n</span>"</span>,<span class="br0">(</span><a href="integer.html"><span class="kw118">intmax_t</span></a><span class="br0">)</span>SIG_ATOMIC_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"WCHAR_MIN      = %+jd<span class="es1">\n</span>"</span>,<span class="br0">(</span><a href="integer.html"><span class="kw118">intmax_t</span></a><span class="br0">)</span>WCHAR_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"WCHAR_MAX      = %+jd<span class="es1">\n</span>"</span>,<span class="br0">(</span><a href="integer.html"><span class="kw118">intmax_t</span></a><span class="br0">)</span>WCHAR_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"WINT_MIN       = %jd<span class="es1">\n</span>"</span>, <span class="br0">(</span><a href="integer.html"><span class="kw118">intmax_t</span></a><span class="br0">)</span>WINT_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"WINT_MAX       = %jd<span class="es1">\n</span>"</span>, <span class="br0">(</span><a href="integer.html"><span class="kw118">intmax_t</span></a><span class="br0">)</span>WINT_MAX<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">PTRDIFF_MIN    = -9223372036854775808
PTRDIFF_MAX    = +9223372036854775807
SIZE_MAX       = 18446744073709551615
SIG_ATOMIC_MIN = -2147483648
SIG_ATOMIC_MAX = +2147483647
WCHAR_MIN      = -2147483648
WCHAR_MAX      = +2147483647
WINT_MIN       = 0
WINT_MAX       = 4294967295</pre></div></div> 
</div>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Limits of integer types">edit</a>]</span> <span class="mw-headline" id="Limits_of_integer_types">Limits of integer types</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code>&lt;limits.h&gt;</code> </div>
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>CHAR_BIT</div></div>
</td>
<td>   number of bits in byte  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>MB_LEN_MAX</div></div>
</td>
<td>   maximum number of bytes in a multibyte character  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>CHAR_MIN</div></div>
</td>
<td>   minimum value of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">char</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>CHAR_MAX</div></div>
</td>
<td>   maximum value of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">char</span></span></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>SCHAR_MIN<br>SHRT_MIN<br>INT_MIN<br>LONG_MIN<br>LLONG_MIN</div>
<div><span class="t-lines"><span></span><span></span><span></span><span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   minimum value of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">signed</span> <span class="kw4">char</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">short</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">long</span></span></span> respectively <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>SCHAR_MAX<br>SHRT_MAX<br>INT_MAX<br>LONG_MAX<br>LLONG_MAX</div>
<div><span class="t-lines"><span></span><span></span><span></span><span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   maximum value of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">signed</span> <span class="kw4">char</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">short</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">long</span></span></span> respectively <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>UCHAR_MAX<br>USHRT_MAX<br>UINT_MAX<br>ULONG_MAX<br>ULLONG_MAX</div>
<div><span class="t-lines"><span></span><span></span><span></span><span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   maximum value of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">char</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">short</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span>,<br><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">long</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span></span></span> respectively <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>

</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example_2">Example</span>
</h3>
<div class="t-example">
<div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;limits.h&gt;</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>   
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"CHAR_BIT   = %d<span class="es1">\n</span>"</span>, CHAR_BIT<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"MB_LEN_MAX = %d<span class="es1">\n</span>"</span>, MB_LEN_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"<span class="es1">\n</span>"</span><span class="br0">)</span><span class="sy4">;</span>
 
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"CHAR_MIN   = %+d<span class="es1">\n</span>"</span>, CHAR_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"CHAR_MAX   = %+d<span class="es1">\n</span>"</span>, CHAR_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"SCHAR_MIN  = %+d<span class="es1">\n</span>"</span>, SCHAR_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"SCHAR_MAX  = %+d<span class="es1">\n</span>"</span>, SCHAR_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"UCHAR_MAX  = %u<span class="es1">\n</span>"</span>,  UCHAR_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"<span class="es1">\n</span>"</span><span class="br0">)</span><span class="sy4">;</span>
 
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"SHRT_MIN   = %+d<span class="es1">\n</span>"</span>, SHRT_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"SHRT_MAX   = %+d<span class="es1">\n</span>"</span>, SHRT_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"USHRT_MAX  = %u<span class="es1">\n</span>"</span>,  USHRT_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"<span class="es1">\n</span>"</span><span class="br0">)</span><span class="sy4">;</span>
 
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"INT_MIN    = %+d<span class="es1">\n</span>"</span>, INT_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"INT_MAX    = %+d<span class="es1">\n</span>"</span>, INT_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"UINT_MAX   = %u<span class="es1">\n</span>"</span>,  UINT_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"<span class="es1">\n</span>"</span><span class="br0">)</span><span class="sy4">;</span>
 
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"LONG_MIN   = %+ld<span class="es1">\n</span>"</span>, LONG_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"LONG_MAX   = %+ld<span class="es1">\n</span>"</span>, LONG_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"ULONG_MAX  = %lu<span class="es1">\n</span>"</span>,  ULONG_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"<span class="es1">\n</span>"</span><span class="br0">)</span><span class="sy4">;</span>
 
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"LLONG_MIN  = %+lld<span class="es1">\n</span>"</span>, LLONG_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"LLONG_MAX  = %+lld<span class="es1">\n</span>"</span>, LLONG_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"ULLONG_MAX = %llu<span class="es1">\n</span>"</span>,  ULLONG_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"<span class="es1">\n</span>"</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">CHAR_BIT   = 8
MB_LEN_MAX = 16
 
CHAR_MIN   = -128
CHAR_MAX   = +127
SCHAR_MIN  = -128
SCHAR_MAX  = +127
UCHAR_MAX  = 255
 
SHRT_MIN   = -32768
SHRT_MAX   = +32767
USHRT_MAX  = 65535
 
INT_MIN    = -2147483648
INT_MAX    = +2147483647
UINT_MAX   = 4294967295
 
LONG_MIN   = -9223372036854775808
LONG_MAX   = +9223372036854775807
ULONG_MAX  = 18446744073709551615
 
LLONG_MIN  = -9223372036854775808
LLONG_MAX  = +9223372036854775807
ULLONG_MAX = 18446744073709551615</pre></div></div> 
</div>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Limits of floating point types">edit</a>]</span> <span class="mw-headline" id="Limits_of_floating_point_types">Limits of floating point types</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>Defined in header <code>&lt;float.h&gt;</code> </div>
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_RADIX</div></div>
</td>
<td>   the radix (integer base) used by the representation of all three floating-point types  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>DECIMAL_DIG</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   number of decimal digits that can be converted to <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> and back without losing precision  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_MIN<br>DBL_MIN<br>LDBL_MIN</div></div>
</td>
<td>   minimum, normalized, positive value of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_MAX<br>DBL_MAX<br>LDBL_MAX</div></div>
</td>
<td>   maximum value of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_EPSILON<br>DBL_EPSILON<br>LDBL_EPSILON</div></div>
</td>
<td>   difference between <span class="t-c"><span class="mw-geshi c source-c"><span class="nu16">1.0</span></span></span> and the next representable value for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_DIG<br>DBL_DIG<br>LDBL_DIG</div></div>
</td>
<td>   number of decimal digits that can be represented without losing precision for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_MANT_DIG<br>DBL_MANT_DIG<br>LDBL_MANT_DIG</div></div>
</td>
<td>   number of base-<code>FLT_RADIX</code> digits that are in the floating-point mantissa and that can be represented without losing precision for <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_MIN_EXP<br>DBL_MIN_EXP<br>LDBL_MIN_EXP</div></div>
</td>
<td>   minimum negative integer such that <code>FLT_RADIX</code> raised by power one less than that integer is a normalized <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_MIN_10_EXP<br>DBL_MIN_10_EXP<br>LDBL_MIN_10_EXP</div></div>
</td>
<td>   minimum negative integer such that <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">10</span></span></span> raised by power one less than that integer is a normalized <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_MAX_EXP<br>DBL_MAX_EXP<br>LDBL_MAX_EXP</div></div>
</td>
<td>   maximum positive integer such that <code>FLT_RADIX</code> raised by power one less than that integer is a normalized <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div>FLT_MAX_10_EXP<br>DBL_MAX_10_EXP<br>LDBL_MAX_10_EXP</div></div>
</td>
<td>   maximum positive integer such that <span class="t-c"><span class="mw-geshi c source-c"><span class="nu0">10</span></span></span> raised by power one less than that integer is a normalized <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> and <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> respectively  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="limits/FLT_ROUNDS.html" title="c/types/limits/FLT ROUNDS"> <span class="t-lines"><span>FLT_ROUNDS</span></span></a></div></div>
</td>
<td>   rounding mode of floating-point arithmetics, equal to <span class="t-c"><span class="mw-geshi c source-c">float_round_style</span></span>  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="limits/FLT_EVAL_METHOD.html" title="c/types/limits/FLT EVAL METHOD"> <span class="t-lines"><span>FLT_EVAL_METHOD</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>   use of extended precision for intermediate results: 0 not used, 1 <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">double</span></span></span> is used instead of <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">float</span></span></span>, 2: <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">long</span> <span class="kw4">double</span></span></span> is used  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>


<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div>FLT_HAS_SUBNORM<br>DBL_HAS_SUBNORM<br>LDBL_HAS_SUBNORM</div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div>
</div>
</td>
<td>   whether the type supports subnormal (<a href="http%3A//en.wikipedia.com/wiki/Denormal_number" class="extiw" title="enwiki:Denormal number">denormal</a>) numbers: -1 indeterminable, 0 absent, 1 present  <br> <span class="t-mark">(macro constant)</span>
</td>
</tr>

</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example_3">Example</span>
</h3>
<div class="t-example">
<div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;float.h&gt; </span>
<span class="co2">#include &lt;math.h&gt;</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_RADIX    = %d<span class="es1">\n</span>"</span>, FLT_RADIX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"DECIMAL_DIG  = %d<span class="es1">\n</span>"</span>, DECIMAL_DIG<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_MIN      = %e<span class="es1">\n</span>"</span>, FLT_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_MAX      = %e<span class="es1">\n</span>"</span>, FLT_MAX<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_EPSILON  = %e<span class="es1">\n</span>"</span>, FLT_EPSILON<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_DIG      = %d<span class="es1">\n</span>"</span>, FLT_DIG<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_MANT_DIG = %d<span class="es1">\n</span>"</span>, FLT_MANT_DIG<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_MIN_EXP  = %d<span class="es1">\n</span>"</span>,  FLT_MIN_EXP<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_MIN_10_EXP  = %d<span class="es1">\n</span>"</span>,  FLT_MIN_10_EXP<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_MAX_EXP     = %d<span class="es1">\n</span>"</span>,  FLT_MAX_EXP<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_MAX_10_EXP  = %d<span class="es1">\n</span>"</span>,  FLT_MAX_10_EXP<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_ROUNDS      = %d<span class="es1">\n</span>"</span>,  <a href="limits/FLT_ROUNDS.html"><span class="kw344">FLT_ROUNDS</span></a><span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_EVAL_METHOD = %d<span class="es1">\n</span>"</span>,  <a href="limits/FLT_EVAL_METHOD.html"><span class="kw345">FLT_EVAL_METHOD</span></a><span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw794">printf</span></a><span class="br0">(</span><span class="st0">"FLT_HAS_SUBNORM = %d<span class="es1">\n</span>"</span>,  FLT_HAS_SUBNORM<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">FLT_RADIX    = 2
DECIMAL_DIG  = 37
FLT_MIN      = 1.175494e-38
FLT_MAX      = 3.402823e+38
FLT_EPSILON  = 1.192093e-07
FLT_DIG      = 6
FLT_MANT_DIG = 24
FLT_MIN_EXP  = -125
FLT_MIN_10_EXP  = -37
FLT_MAX_EXP     = 128
FLT_MAX_10_EXP  = 38
FLT_ROUNDS      = 1
FLT_EVAL_METHOD = 1
FLT_HAS_SUBNORM = 1</pre></div></div> 
</div>

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